Selenium is a key antioxidant nutrient and functions best with vitamins A, C and E. These special antioxidant nutrients help prevent free radical damage to body cells due to oxidation. Selenium may also have a balancing effect on the body by helping to control the production of prostaglandins (hormone like compounds), as well as having a role to play in the body's basal metabolism and helping to maintain a healthy blood pressure. Selenium 50ug is an economical, bio-available top up supplement containing 50ug of selenium in the preferred Selenomethionine form! Active ingredients per tablet: Selenium (Selenomethionine Preparation) 50mcg Packed in a planet-friendly recycled pot that is recyclable.